overlapping in duration; "concurrently with the conference an exhibition of things associated with Rutherford was held"; "going to school and holding a job at the same time"
a fastener consisting of a peg or pin or crosspiece that is inserted into an eye at the end of a rope or a chain or a cable in order to fasten it to something (as another rope or chain or cable)
any instruction that works first one way and then the other; it turns something on the first time it is used and then turns it off the next time
release by a toggle switch; "toggle a bomb from an airplane"